03 Blazer Stock Alarm Question
 

So last night at like 4am My alarm on my blazer went off. Woke my neighbor up he called and woke me up and just as I went to shut it off it stopped. :icon_saywhat:
I had a customers computer sitting on my front seat, Its all still there but I was thinking maybe someone tried to open the door or something. What Im wondering is How do you set the alarm off? I set if off the other day by unlocking the door from inside after I had pushed the lock button. I dont believe it will go off just by the handle as i have pulled on it and its been locked. Also Im wondering whats the best place to get a remote for the lock/alarm so I dont have to go start the truck every time it goes off lol Thanks

I wanted to make sure my battery was ok since the alarm shut off by it self. I tried to open the doors and pry on the windows and doors. Tried the hatch and the butting nothing I did made the alarm go off ! lol Truck starts fine I do see the security light when i put the key in but it goes off after i start it , Im confused on what it actually does and why it would randomly go off. I did just install a new cd player but all the wires are color coated and everything is hooked up and working just fine.